ROCK CUTTING TOOL,申请号JP19790056212-传众专利搜索

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发明名称	ROCK CUTTING TOOL
摘要
申请公布号	JPS557390(A)	申请公布日期	1980.01.19
申请号	JP19790056212	申请日期	1979.05.07
申请人	HUGHES TOOL CO	发明人	JIYOOJI I DOORUZARU;RICHIYAADO TEI APUTON
分类号	E21B10/18;B01D45/16;E21B10/23;E21B10/24;E21B21/00	主分类号	E21B10/18
代理机构		代理人
主权项
地址

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